Nodejs: This socket is closed - node.js

Question

I am using tcp sockets in Node.js to communicate with a Java client.
See my very basic server implementation below:
var server = my_http.createServer();
echo.installHandlers(server, {
prefix: '/echo'
});
server.listen(8000, '0.0.0.0');
var socketServer = net.createServer(function (socket) {
// Identify this client
socket.name = socket.remoteAddress + ":" + socket.remotePort
// Put this new client in the list
clients.push(socket);
sockets[socket.name] = socket;
// Handle incoming messages from clients.
socket.on('data', function (data) {
try {
var obj = JSON.parse(data);
if (obj.type == "sendMessage") {
broadcast("{\"id\":\"1\", \"msg\": \"" + obj.msg + "\", \"name\": \"" + obj.name + "\", \"time\": \"" + getDateTime() + "\"}\n", socket);
}
} catch (er) {
}
});
// Remove the client from the list when it leaves
socket.on('end', function () {
try {
clients.splice(clients.indexOf(socket), 1);
} catch (err) {
}
});
// Send a message
function broadcast(message, sender) {
try {
clients.forEach(function (client) {
client.write(message); // ERROR IS HERE
});
} catch (ee) {
}
}
return socket;
}).listen(8080);
For some reason sometimes i get this error:
events.js:71
throw arguments[1]; // Unhandled 'error' event
^
Error: This socket is closed.
Its happening on this line:
client.write(message); // ERROR IS HERE
Any ideas how to prevent this from happening?

Answer 1

or use client.writable to detect if the socket available.
clients.forEach(function (client) {
try {
if (client.writable) {
clientwrite("are u alive");
} else {
console.log('client is not writable');
}
} catch (err) {
console.log("cannot send message.");
}
}

Answer 2

Try this code
Option1
function broadcast(message, sender) {
try {
clients.forEach(function (client) {
if(client._handle){ // ensure there is still underlying handle
client.write(message); // ERROR IS HERE
}
});
} catch (ee) {
}
}
Option2
Attach error event listener on socket.
Socket.on('error',function(){
console.log("%j", arguments);
});